Edwaed p



(No Model.)

B. P. WAGGONER.

. VENT PLUG FOR STEAM RADIATORS, No. 379,260. Patented Mar. 13, 1888.

WITNESSES! v IN'VENTOR 1 (5.6 @W m/ I ATTORNEYS. v

N, PETERS, Moto-Lhhogrzphor, Washington, D. (L

UNITED STATES PATENT EDWARD P. VAGGONER, OF SYRACUSE, NEW/V YORK,ASSIGNOR OF ONE-HALF TO THE PIERCE, BUTLER & PIERCE MANUFACTURINGCOMPANY, OF SAME PLACE.

SPECIFICATION forming part of Letters Patent No. 379,260. dated March13, 1888.

(No model.)

To aZZ whom it may concern.-

Be it known that I, EDWARD P. WAGGONER, of Syracuse, in the county ofOnondaga, in the State of New York, have invented new and usefulImprovements in Vent-Plugs for Steam-Radiators, of which thefollowing,taken in connection with the accompanying drawings, is a full,clear, and exact description.

My invention has reference to the class of devices employed uponsteam-radiators ior venting the sauie'to secure a circulation of thesteam; and the object of the invention is to so construct the vent-plugas to start the circulation of the steam immediately, and then have theplug automatically control the circulation by venting the same asrequired; and to this end the invention consists in a vent-plug for.

steam-radiators having an automatic and a positive vent arranged andlocated on the same stem connected with the steam-radiator,

and also in detail construction and arrangement of the parts, all ashereinafter more particularly described, and pointed out in the claims.

In specifying my invention reference is had to the accompanyingdrawings, in which like letters indicate corresponding parts in all theviews.

Figure 1 is a side elevation of my improve 0 ment for steam-radiators,illustrating the construction and arrangement of parts. Fig. 2 is alongitudinal vertical section of the same; and Fig. 3 isatransversesection taken on line 00 00, Fig. 2.

The invention, as stated, consists, broadly, in

the combination of an automatic and a positive vent for steamradiatorslocated on the same stem, and I do not restrict myself to any specificform of construction of the device;

40 but the drawings hereinillustrate my preferred example of theconstruction of the improved vent-plug; and the letter A represents theexterior tube or shell of the automatic vent-plug,

and is provided with a thread, Wand with the cap 0, having an aperture,g, forthe escape of the steam.

Upon the interior of the cap 0, I provide the disk 0, which may beformed integral with the nut O, and provide a hole or aperture, 0,through the disk or head 0 for the passage of the stem R, the head S ofwhich hasa bevel, 8, corresponding with the contour of the recess 6 inthe head 0. The lower end of the stem R is provided withscrew-threadsri', which take in the threaded seat 7" of the head. D inthe 5 5 coupling B.

The tube A of the automatic vent-plug screws into the coupling B of thepositive ventplug B, as best shown in the sectional view, Fig. 2.

The positive vent-plug is represented by B, and is provided with thecoupling-extension B, having a threaded socket, into which the thread aof the tube A is screwed.

The positive vent-plug B is provided with the chamber 12 and thesteam-inlet ein the screw-plug D, by means of which latter it isattached to the steam-radiator. The head D is provided with passages 12b for the escape of the steam from the chamber 1) into the tube 7c A,and the chamber 1) is provided with the outlet 0 into the valve-screw d,which has the aperture f for the escape of the steam.

The valve-screw d is supported on. the threaded plug E, which is screwedinto the positive vent B, as best shown in the sectional view, Fig. 2.

It will be'observed that the construction of the automatic venting-plugand its parts and the positive venting-plug B is substantially the sameas of the segregated devices for this purpose in common use, and thatthe difference and novelty of my invention consists in combining the twoso as to operate in conjunction with each other.

The automatic vent-plug and its parts operate by the expansion andcontraction of the metal tube A to open and close the valve formed bythe passage e in the head 0 and the head S of the screw B within thetube A, and 0 the screw-threaded stem R serves to adj ustthe automaticvent to secure the desired result, while the plug B serves to vent theradiat r positively by simply operating the screw-valve d, as in theordinary positive vent-plug for 5 steam-radiators.

By my invention it will be observed that the two forms of vent-plugs arecombined in one device, and when it is desired to vent a steamradiatorthe circulation of the steam can be quickly secured by turning on thepositive vent and starting the circulation thereby, then closing thescrew-valve d, which throws the steam upward through the passages b Z)and into the tube A of the automatic ventplug, which operates theautomatic vent and controls the circulation of steam thereafterautomatically. 7

By my invention a great improvement is effected over the formervent-plug devices for steam-radiators, either automatic or positive, forthe reason that in the automatic vent-plug as at present constructedvery delicate adjustment of the stem R is required to make the devicecifective, and it is difficult to adjust the screw while the steam isrushing in; and, furthermore, such device is not uniform in its operation, particularly when the radiator becomes cold and thesteam-pressure is forced in while the radiator is cold.

In my improvement the radiator is quickly vented in the first instanceby the positive vent B, which is very effective in venting the radiator,and the automatic vent is brought into operation by shutting off thepositive vent, as hereinbet'ore explained.

It will be readily understood that the stem R in the automatic vent canbe adjusted very readily without dificulty to control the venting of theradiator after the circulation of the steam therein has been secured bythe positive vent.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. A vent-plug forsteam-radiators, composed of a screw-plug having apassage for the escape of steam and air extending through the same inopen connection with the radiator and the air, a valve for closing thesame, and an automatic expansion-tube mounted on the screw plug andhaving openings connected with the passage in the screw-plug,substantially as and for the purpose set forth.

2. Avent-plugforstean1-radiators,composed of the screw-plug B, having apassage for the escape of steam and air extending through the plug inopen connection with the radiator and the air, a valve for closing thepassage, the said passage enlarged at b and having openings 1), leadinginto the automatic expansiontube A, and the automatic expansion-tube A,mounted on the screw-plug B over the enlargement b, substantially as andfor the purpose set forth.

In testimony whereof I havehereunto signed my name, in the presence oftwo attesting witnesses,at Syracuse, in the county ofOnondaga, in theState of New York, this 27th day of December, 1886.

EDXVARD P. \VAGGONER.

Witnesses:

F. H. GIBBS, E. O. CANNON.

